class Calculator:
    def add(self,a,b):
        if a > 99 or a < -99 or b > 99 or b < -99:
            print("请输入范围为【-99，99】的整数或浮点数")
            return "参数大小超出范围"
        return a + b

    def div(self,a,b):
        if a > 99 or a < -99 or b > 99 or b < -99:
            print("请输入范围为【-99，99】的整数或浮点数")
            return "参数大小超出范围"
        return a / b